[cups-devel] [ipptool] Can I query CUPS for PPD-defined queue-specific print job attributes?

[pipitas]

When using `lpoptions -p printername -l` I can get reported all PPD-defined
user-selectable and queue-specific print job attributes.

Is this also possible with the help of `ipptool`?

If I query for "finishings", ipptool can display even the non-standard
names of output bins for a certain printer. Example:

    output-bin-supported (1setOf keyword) = default,standard,bin-1,shift,\

external,fin-rubiconbshift,fin-volgabbkupper,fin-volgabbkshift,\

fin-volgabbklower,fin-volgabupper,fin-volgabshift,fin-amurbkupper,\

fin-amurbkshift,fin-amurbklower,fin-amurupper,fin-amurshift

These values obviously are retrieved by CUPS from the PPD. This succeeds
because CUPS internally can map the IPP attribute "output-bin" to the PPD
keyword "OutputBin".

Can I ask CUPS to retrieve and report other PPD information as well, if I
know (and tell CUPS) the non-standard optionnames/keywords?